herdwick sheep perched on a craggy rock symbolise the durability of the Chimney Sheep

Durability incorporated by design

In 1924 the Phoebus cartel of four major light bulb manufacturers got together and agreed that rather than compete with each other for their light bulbs to be better / stronger / last longer, they would all limit their bulbs’ life to 1000 hours. That way they would all sell more bulbs. This is a …